*{
    box-sizing: border-box;
    user-select: none;
}

footer{
    box-shadow: 0 15px 30px rgb(0 0 0 / 10%);
}
.header{
    margin: 0 auto;
    width: 100%;
    height: 155px;
}

.header .top{
    height: 40px;
    background-color: black;
}
.header .top a{
    color: #f49500;
}
.header .top a:hover{
    background-color: black;
    color: #ccc;
}
.header .top>div{
    height: 40px;
    background-color: black;
    display: flex;
    justify-content: space-between;
}

.header .top span{
    margin-top: 5px;
    font-size: 14px;
    line-height: 40px;
    color: #fff;
}
.header .top span span{
    color: #f49500;
}


/* nav */
.nav-t{
    background-color: #fff;
}
.nav{
    height: 115px;
}

.nav .logo{
    margin-right: 70px;
    float: left;
    margin-top: 15px;
    width: 230px;
    height: 88px;
   background: url(../../img/jd.png) no-repeat;
   background-size: 190px 120px;
   background-position: 0 0;
}
.nav .header-desc{
    float: left;
    height: 65px;
    width: 899px;
    /* margin-left: 103px; */
}
.nav .header-desc .top-t{
    width: 800px;
    height: 35px;
    margin-top: 25px;
}
.nav .header-desc .search{
    
    float: left;
  
    width: 490px;
    height: 35px;
}
.nav .header-desc input{
   
    float: left;
    outline: none;
    border: 2px solid #f49500;
    font-size: 14px;
    text-indent: 1em;
    height: 35px;
    width: 430px;
}
.nav .header-desc button{
    background: url(../../img/搜索.png) no-repeat;
    background-position: 12px 3px;
    background-size: 30px;
    float: left;
    outline: none;
    border: 0;
    height: 35px;
    width: 60px;
    background-color: #f49500;
}

.car,.order{
    color: #000 !important;
    font-size: 14px;
    margin-left: 20px;
    float: left;
    text-align: center;
    line-height: 35px;
    background-color: #fff;
    width: 130px;
    height: 35px;
    border-radius: 3px;
    border: 1px solid #9f9f9f;
}

.car,.order::after{
    content: '';
    display: inline-block;
    background: url(../../img/购物车.png) no-repeat;
    background-position: 8px 4px;
    background-size: 25px;
    margin-right: 10px;
}


.car span{
    line-height: 20px;
    display: inline-block;
    width: 20px;
    height: 20px;
    background-color: #f49500;
    border-radius: 50%;
    color: aliceblue;
}
.car b{
    font-weight: normal;
    display: inline-block;
    margin-left: 22px;
}

.nav .header-desc .option{
    margin-top: 5px;
    font-size: 16px;
    color: #9f9f9f;
    width: 880px;
    height: 44px;
    text-align: center;
    line-height: 44px;
}
.nav .header-desc .option ul li{
    margin-right: 28px;
    float: left;
}
.nav .header-desc .option ul li:hover{
    color: #f49500;
}
